LCM of 857, 721, 540, 225
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 857, 721, 540, 225 with the LCM of Two or More Numbers Calculator. Here we are teaching you two different methods through which you can calculate the LCM of 857, 721, 540, 225. So, keep reading to learn more.
Given numbers are 857,721,540,225
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 857,721,540,225 is 1668321900.
Find LCM of 857,721,540,225 with Prime Factorization
| 3 | 857, 721, 540, 225 |
| 3 | 857, 721, 180, 75 |
| 5 | 857, 721, 60, 25 |
| 857, 721, 12, 5 |
Multiply the prime numbers at the bottom and the left side.
3 x 3 x 5 x 857 x 721 x 12 x 5 = 1668321900
Therefore, the lowest common multiple of 857,721,540,225 is 1668321900.
LCM formula is LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}
Firstly, we have to find the product of all the numbers.
857 x 721 x 540 x 225 = 75074485500
Then, let us find the GCF of these five numbers. To do so, we have to list down the factors for each number and choose the highest factor that is in all of the lists.
857 : 1, 857
721 : 1, 7, 103, 721
540 : 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540
225 : 1, 3, 5, 9, 15, 25, 45, 75, 225
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 857,721,540,225, is 1.
Now, the common factors can be found like this.
857:857
721:7x 103
540:2x 2x 3x 3x 3x 5
225:3x 3x 5x 5
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
3x 3x 5 = 45
Therefore, the value for common factors is 45.
Now that we have all the elements of the formula, we can plug them in to calculate the LCM.
LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}
LCM = 75074485500/(1x45)
LCM = 75074485500/45
LCM = 1668321900
Thus, we can understand that the LCM of 857,721,540,225 is 1668321900.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 857, 721, 540, 225
1. What is the LCM of 857, 721, 540, 225?
Answer: LCM of 857, 721, 540, 225 is 1668321900.
2. How to calculate the LCM of 857, 721, 540, 225?
The LCM can be found using two methods. You can either use the LCM formula or the prime factorization method to calculate the LCM of 857, 721, 540, 225.
3. What is the LCM formula?
The LCM formula is LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}.